Solving Quadratic Equations

(x + 3)² = 36

• x = √36
• x = √39
• x = -9 and x = 3
• x = 9 and x = -3

Solve the equation:

 $2x^2+5=11x$  

•  $x\ =\ 5\ or\ x=\frac{1}{2}$  

•  $x\ =\ -5\ or\ x=\frac{1}{2}$  

•  $x\ =\ 5\ or\ x=-\frac{1}{2}$  

•  $x\ =\ -5\ or\ x=-\frac{1}{2}$  

Solve the equation: $x^2+5x=6$  

• x= -1, x= 6

• x= 1, x= -6

• x= 1, x= 6

• x= -1, x= -6

Solve the equation:

 $x^2-10x+5=-2x^2+4$  

•  $\frac{10\pm\sqrt{112}}{6}$ 

•  $\frac{-10\pm\sqrt{88}}{6}$ 

•  $\frac{5\pm\sqrt{22}}{3}$ 

•  $\frac{5\pm2\sqrt{22}}{3}$ 

Solve the equation:

 $2x^2-10x+5=x^2-14$  

•  $\frac{-10\pm\sqrt{24}}{2}$ 

•  $\frac{-10\pm2\sqrt{6}}{2}$ 

•  $5\pm\sqrt{6}$ 

•  $-5\pm2\sqrt{6}$